Finding the Fourth Proportional to 2,488.64, 3,733.49 and 845.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,488.64 : 3,733.49 = 845.15 : x
2. Step 2: Convert to fraction form
   2,488.64/3,733.49 = 845.15/x
3. Step 3: Cross multiply
   2,488.64x = 3,733.49 × 845.15
4. Step 4: Simplify right side
   2,488.64x = 3,155,336.18
5. Step 5: Solve for x
   x = 3,155,336.18/2,488.64
6. Step 6: Final answer
   x = 1,267.90